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//Package tamtam implements TamTam Bot API
//Copyright (c) 2019 Alexander Kiryukhin <a.kiryukhin@mail.ru>
package tamtam
import (
"context"
"encoding/json"
"io/ioutil"
"log"
"net/http"
"net/url"
"strconv"
"time"
)
//Api implements main part of TamTam API
type Api struct {
Bots *bots
Chats *chats
Messages *messages
Subscriptions *subscriptions
Uploads *uploads
client *client
updates chan UpdateInterface
timeout int
pause int
}
// New TamTam Api object
func New(key string) *Api {
u, _ := url.Parse("https://botapi.tamtam.chat/")
cl := newClient(key, "0.1.8", u)
return &Api{
Bots: newBots(cl),
Chats: newChats(cl),
Uploads: newUploads(cl),
Messages: newMessages(cl),
Subscriptions: newSubscriptions(cl),
client: cl,
updates: make(chan UpdateInterface),
timeout: 30,
pause: 1,
}
}
func (a *Api) bytesToProperUpdate(b []byte) UpdateInterface {
u := new(Update)
_ = json.Unmarshal(b, u)
switch u.GetUpdateType() {
case TypeMessageCallback:
upd := new(MessageCallbackUpdate)
_ = json.Unmarshal(b, upd)
return upd
case TypeMessageCreated:
upd := new(MessageCreatedUpdate)
_ = json.Unmarshal(b, upd)
for _, att := range upd.Message.Body.rawAttachments {
upd.Message.Body.Attachments = append(upd.Message.Body.Attachments, a.bytesToProperAttachment(att))
}
return upd
case TypeMessageRemoved:
upd := new(MessageRemovedUpdate)
_ = json.Unmarshal(b, upd)
return upd
case TypeMessageEdited:
upd := new(MessageEditedUpdate)
_ = json.Unmarshal(b, upd)
for _, att := range upd.Message.Body.rawAttachments {
upd.Message.Body.Attachments = append(upd.Message.Body.Attachments, a.bytesToProperAttachment(att))
}
return upd
case TypeBotAdded:
upd := new(BotAddedToChatUpdate)
_ = json.Unmarshal(b, upd)
return upd
case TypeBotRemoved:
upd := new(BotRemovedFromChatUpdate)
_ = json.Unmarshal(b, upd)
return upd
case TypeUserAdded:
upd := new(UserAddedToChatUpdate)
_ = json.Unmarshal(b, upd)
return upd
case TypeUserRemoved:
upd := new(UserRemovedFromChatUpdate)
_ = json.Unmarshal(b, upd)
return upd
case TypeBotStarted:
upd := new(BotStartedUpdate)
_ = json.Unmarshal(b, upd)
return upd
case TypeChatTitleChanged:
upd := new(ChatTitleChangedUpdate)
_ = json.Unmarshal(b, upd)
return upd
}
return nil
}
func (a *Api) bytesToProperAttachment(b []byte) AttachmentInterface {
attachment := new(Attachment)
_ = json.Unmarshal(b, attachment)
switch attachment.GetAttachmentType() {
case AttachmentAudio:
res := new(AudioAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentContact:
res := new(ContactAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentFile:
res := new(FileAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentImage:
res := new(PhotoAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentKeyboard:
res := new(InlineKeyboardAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentLocation:
res := new(LocationAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentShare:
res := new(ShareAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentSticker:
res := new(StickerAttachment)
_ = json.Unmarshal(b, res)
return res
case AttachmentVideo:
res := new(VideoAttachment)
_ = json.Unmarshal(b, res)
return res
}
return attachment
}
func (a *Api) getUpdates(limit int, timeout int, marker int, types []string) (*UpdateList, error) {
result := new(UpdateList)
values := url.Values{}
if limit > 0 {
values.Set("limit", strconv.Itoa(limit))
}
if timeout > 0 {
values.Set("timeout", strconv.Itoa(timeout))
}
if marker > 0 {
values.Set("marker", strconv.Itoa(marker))
}
if len(types) > 0 {
for _, t := range types {
values.Add("types", t)
}
}
body, err := a.client.request(http.MethodGet, "updates", values, nil)
if err != nil {
return result, err
}
defer func() {
if err := body.Close(); err != nil {
log.Println(err)
}
}()
jb, _ := ioutil.ReadAll(body)
return result, json.Unmarshal(jb, result)
}
func (a *Api) UpdatesLoop(ctx context.Context) error {
for {
select {
case <-ctx.Done():
return nil
case <-time.After(time.Duration(a.pause) * time.Second):
var marker int
for {
upds, err := a.getUpdates(50, a.timeout, marker, []string{})
if err != nil {
return err
}
if len(upds.Updates) == 0 {
break
}
for _, u := range upds.Updates {
a.updates <- a.bytesToProperUpdate(u)
}
marker = *upds.Marker
}
}
}
}
//GetUpdates returns updates channel
func (a *Api) GetUpdates() chan UpdateInterface {
return a.updates
}
//GetHandler returns http handler for webhooks
func (a *Api) GetHandler(updates chan interface{}) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
defer func() {
if err := r.Body.Close(); err != nil {
log.Println(err)
}
}()
b, _ := ioutil.ReadAll(r.Body)
updates <- a.bytesToProperUpdate(b)
}
}
|
